banister

class Person
  def add_accessor(accessor_name)
    class << self; self; end.class_eval do
      attr_accessor accessor_name
    end
  end
end

person = Person.new
Person.add_accessor :name

banister

class Foo
    def self.create(options = {})
      if options[:queue]      
        define_singleton_method :queue do 
          "#{options[:queue].to_sym}"
        end        
      end
      self.enqueue(self, options)
    end
  end

banister

class Foo
    def self.create(options = {})
      if options[:queue]
        self.instance_eval do
          def queue 
            #{options[:queue].to_sym}
          end
        end
      end

banister

direc = File.dirname(__FILE__)

require "#{direc}/local_eval/version"
require 'remix'
require 'object2module'

module LocalEval
  module ObjectExtensions
    @@m = Mutex.new
    def local_eval(*objs, &block)

banister

# extconf.rb
require 'mkmf'
create_makefile('foo')

# foo.h
#ifndef __FOO_H_INCLUDED__
#define __FOO_H_INCLUDED__

#include <ruby.h>

banister

module Scope
  module ScopeMethods
    def helpers(&block)
      self.instance_eval(&block)
      block.call
      puts "self inside helpers #{self}"
    end
  end

  def scope(path, &block)

banister

class PostQuery < Query

        @@clauses =  [:columns, :operations, :order]
        def initialize(target_object)
            super(target_object, @@clauses)

        @clauses.each do |c|
          class << self; self; end.define_method(c) { self[c] }
        end